Can you point me to other examples of visual representations of connectivity in global scale? Connectivity in this case applies to both transportation and communication. And geovisualizations might include static maps as well as interactive web applications.

That's a very pretty example, but it's awfully difficult to extract useful information from it. Note, too, that it is not on a global scale: it is strictly on the scale of a continent; we cannot even see about 2/3 of the globe.
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whuber♦Oct 27 '11 at 17:09

@whuber: Correct in all aspects - hence the question in search for better examples.
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radekOct 27 '11 at 17:52

7 Answers
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I have two relevant examples to provide and a dedicated page on globaia :

1) There is a submarine cable map with some interactivity. Tha ability to select a cable and change alpha to unselected items is interesting in term of visualization. Some more explanations regarding this map here. The graphical semiology makes me think to subway maps.

2 ) An HTML5 Migration map with dynamic visualization. It gives the ability to visualize a lot of data but with no global visualization. The choice of the author is to simplify the representation without breaking the global purpose. In a way, he just makes it possible. The code is shared in github under MIT license.

3) See also many examples (such as submarine cables, pipelines, transportation, airlines traffic, and soo on) located on the following page : http://globaia.org/en/anthropocene/

The Global Dependency Explorer is an interesting non-spatial visualization of trade (or connectivity) in the world. It requires Chrome or Safari to browse, unfortunately, and appears a little out of date as there is a server-error showing up in one frame.